• Title, Summary, Keyword: 흰불나방

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Pathogenicity of Entomopathogenic Nematode, Steinernema carpocapsae against Fall Webworm, Hyphanria cunea (Lepidoptera: Arctiidae) (미국흰불나방(Hyphanria cunea)에 대한 곤충병원성선충 Steinernema carpocapsae의 병원성)

  • Park Hyung Soon;Kim Hyeong Hwan;Chung Hun Gwan;Cho Yoon Sin;Jeon Heung Yong;Jang Han Ik;Kim Dong Soo;Choo Ho Yul
    • Asian Journal of Turfgrass Science
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    • v.18 no.4
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    • pp.193-200
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    • 2004
  • Environmentally sound control of fall webworm, Hyphanria cunea (Drury) with entomopathogenic nematode, Sreinernema carpocapsae Pocheon strain was evaluated in the laboratory and pot. Pathogenicity of 5. carpocapsae Pocheon strain was different depending on larval stage, i.e., mortality of the 2nd instar and the $3\~4th$ instar was $100\%$ with >20 infective juveniles (Ijs)/larva in 3 days, but the 5th instar was $34\%$ with (Ijs)/larva in 3 days. Pathogenicity of 5. carpocapsae Pocheon strain was higher with increasing nematode concentration. Mortality of Hyphanria cunea larva by 5. carpocapsae Pocheon strain was not significantly different (more than $70\%$) between nematode concentration on treated trees (Malus alba and Platanus orientalis) and in pot.

Studies on the mating behavior of the fall webworm, Hyphantria cunea Drury (흰불나방의 교미습성에 관한 연구)

  • Choi S. Y.
    • Korean journal of applied entomology
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    • v.7
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    • pp.15-20
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    • 1969
  • This experiment was planned to study the mating behavior of the fall webworm. Hyphantria cunea Drury. In this experiment. observations on mating behavior of the fall webworm were based on the time of moth emergence, time of mating activity, copulation period, mating frequency, and effect of moth ages on the mating ratio. Mating frequency was determined by visual observation and the number of spermatophores. The results obtained were as follows; 1) The moths started emerging at about 3 P. M. and ended at about 12 P. M. The peak of moth emergence was between 7 and 8 P. M. Total ratio or the moths emerged between 7 and 8 P. M. was 42. 1 for female and 41.8 for male. 2) Mating activity was mostly confined to the period between 5 and 6 A. M. The average complation period was 12 hours (ranges between 7 and 17 hours). 3) The average ratio of single mating was $66.0\%$ for both sexes, and that of double. matings were $4.1\%$ for females and $5.4\%$ for males in laboratory test. The mating ratio of female moths collected from the field was $62.1\%$ for single mating. and 15.5" for doubles matings. These data indicated that single mating seemed to be most common. 4) Mating usually occured within four days after the emergence from the pupae. Mating ratio was greatly varied with the moth ages. The highest mating ratio was observed within 6 to 15 hours after moth emergence. Both sexes usually mated with the moths of the same ages.

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Research on the Distribution and Damage of the Fall Webworm Hyphantria cunea Durury (미국 흰불나방의 피해(被害)와 분포조사(分布調査))

  • Ko, Jeho;Lee, Sangok
    • Journal of Korean Society of Forest Science
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    • v.7 no.1
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    • pp.35-39
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    • 1968
  • 1. The Fall webworm, Hyphantria cunea was widely distributed ranging from Seoul to Kangnung, Yung-ju, Taegu, Iri and Kwang-ju in 1967. 2. Heavily infested tree species by the Fall webworm were Sycamore, Cherry, ash-leaved maple, poplar, and elm. 3. The average number of larval masses per damaged garden tree and roadside tree was 7.0 and 3.4 respectively. 4. Trees of 6-10m in height had most number of larval masses and were most heavily infested. 5. More larval masses were found in the median and lower parts than higher parts of the crown. 6. The ratio of damaged by second generation was 55% higher than by first generation. The ratio of damage by 3rd generation is 18% less than by first generation.

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Studies on the Toxicity of Insect Growth Regulators against the fall Webworm (Hyphantria cunea Drury) and the Rice stem Borer (Chilo suppressalis Walker) I. comparisons of Insecticidal Activities against Various Instar Stages (미국흰불나방과 이화명나방에 관한 곤충 발육 저해제의 독성연구 I. 령기별 살충력 효과 비교)

  • 이인환;이형래;김정화
    • Korean journal of applied entomology
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    • v.33 no.2
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    • pp.81-87
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    • 1994
  • The experiments were canied out to investigate the toxicological characteristics of Insect Growth Regulators (IGRs) such as chlorfluazuron, diflubenzuron, pyriproxyfen and tebufenozide against the various stages of instars of fall webwom (Hyphantrio cuneo Dmy) and nce stem borer (Chiio suppressaiis Walker). In fall webwom, the tolerance ratio m) with the 2nd-6th instars, as cornpared with LCso of the 1st instar, ranged 107-358, 1.13-6.06, 1.02-3.23 and 1.05- 6.64, respectively. In the rice stern borer, the TR of the 3rd instar, as compared with LCso of the 1st instar, to chlorfluazuron, diflubenzuron, pyriproxyfen and tebufenoz~de were 2.86, 260, 19.80 and 15.30, respectively.

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A Report on the Occurrence of and Crop Damage Caused by Hyphantria cunea (Drury) with in Korea (국내 미국흰불나방의 최근 발생 및 피해 보고)

  • Kim, Dong-Eon;Kil, Ji-Hyon
    • Korean journal of applied entomology
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    • v.51 no.3
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    • pp.285-293
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    • 2012
  • Occurrence Hyphantria cunea was confirmed in 35 cities and counties nationwide in 2011, each of which reported some form of crop and/or ecological damage caused by the moth. Only a larva of the black-headed form were reported to have occurred in the nation. H. cunea was found in street trees 66.7%, followed by landscape trees 19.4% and forests 13.9%. This suggests that artificial environment 86.1% suffered from H. cunea more severely than natural forests. The study identified 44 families and 102 species of host plants, and found an additional 29 species, to those which had been identified in previous studies. At present, the identified host plants of H. cunea are composed of 62 families and 219 species in total since their first appearance was reported approximately 50 years ago. Host plants include 5 species of food crops (2.3%), 6 species of vegetables (2.7%), 4 species of medicinal crops (1.8%), 1 species of industrial crops (0.5%), 13 species of fruit trees (5.9%), 6 species of other trees crops (2.7%) as well as a further 5 species of farmed crops (2.3%). Seven species of host plants (18.4%) originate from North America where Hyphantria cunea has been introduced from, while 11 species (29.0%) are from China and Japan, Europe and India were the native sources of (10.5%) of the origin with 4 species, respectively. Seventeen species of trees, including Platanus occidentalis L., Ulmus davidiana (var.) japonica (Rehder) (Nakai) and Cornus officinalis (Siebold & Zucc) were heavily noted to be heavily infected with larval populations.